Role of NCA for Hydrological Forecasting in Narmada Basin | RTDAS In Narmada Basin| Implementation of the project | Technical Profile | Network Configuration | Sensor Details | Communication Equipments | Present Status | Hydromet Subgroup |



Project Implementation

The project is being implemented on a turn key basis by M/S Electronics Corporation of India Ltd.(ECIL), a Govt. of India undertaking, with their consortium members M/s Vitel Inc. USA and M/s Sierra Misco USA. All the 26 Remote Stations in Narmada basin and the Master Control Centre (MCC) at Indore have already been set up.  The data from Remote stations are being communicated to MCC at the pre-programmed interval of 60 minutes round the clock under Interrogation-Answer back protocol.  The project is scheduled to be retested during monsoon 2006 before its taking over from ECIL.  


Technical Profile

The initial phase of RTDAS network comprising of 26 Remote stations utilizes latest technology by deploying rugged, highly sensitive and accurate hydro meteorological sensors with associated electronics for measurement of important parameters viz. rainfall, wind speed, wind direction, ambient temperature, relative humidity, water level, evaporation and solar radiation at remote stations. Float type water level sensor with optical shaft encoder needs stilling well for its functioning. The corresponding electrical output of the sensor is sent to microprocessor based Data Collection Platform (DCP) which is a composite modular unit for data acquisition and up-link transmission through KALPANA-I. Every remote station is a SATCOM Micro Earth Station (MES) to facilitate the data/text communication under interrogation-answer back protocol for which an INSAT receiving system with a 3 meter dish antenna has been deployed. The network uses three channels within a bandwidth of 25 KHz at a central frequency (UHF) of 402.776 MHz to enhance the link reliability. These channels are termed as Pilot, Data and Emergency channels. The data transmission speed is 9600 bauds.


Network Configuration


Category of Remote stations

Project Station (PS)

Five: Matiari, Bargi, Tawa, ISP (M.P.) & SSP (Gujarat)

Key gauge & Discharge Stations (KGDS)

Six : Mohegaon, Barmanghat, Hoshangabad, Amgaon, Maheshwar & Barwani(All in M.P.)

Gauge & Discharge Stations (GDS)

Seven:Dindori, Bamni Banjar, Tawakati, Shahpur, Dhulsar, Pati & Jobat(All in M.P.)

Meteorolo-gical Station (MS)

Eight: Pipariya, Lingarayat, Baihar, Mawai, Bijadandi, Betul Bazar, Panchmari (M.P.) & Dhadgaon (Maharasthra)


Parameters to be measured


Rainfall, Wind speed, Wind direction, Ambient temperature, Relative humidity, Water level, Solar radiation, Evaporation & Wind run


Rainfall, Wind speed, Wind direction, Ambient temperature, Relative humidity and Water level


Rainfall, Wind speed, Wind direction, Ambient temperature and Relative humidity


Hydrological forecast


Four :- Bargi, Tawa, ISP & SSP

Water level

Two :- Mandla and Mohegaon


E-mail transfer

Among eleven stations of PS/KGDS category and MCC


Local storage

Locally retrievable 55000 Hourly data point storage in 128 KB memory. Instant data display.


Network control

Frequency, time synchronization, link prioritization, monitoring of station equipments’ health.


Power supply

72 Watt Solar panel backed 200 AH, 12 Volt battery at remote station for all equipments except PC for e-mail transfer. E-mail designated PC shall operate on 230 Volt single phase AC mains power

3 phase AC mains power supply with power back up of 7.5 KVA UPS & 30 KVA D.G. Set for MCC